Create method in c++?

Question

C++ / C#

I was asked to write a task manager in c++ with a GUI. Chose Visual Studio. Created a project. There are 2 files .cpp and .h
The events of the controls are described in the .h file, in the same place I want to create a method that should display a list of processes in the listbox. I found a large and thick code for this purpose, but in the process of inserting it into the method, I received a bunch of errors that some libraries were not connected. As far as I know, libraries are not included in the header file, are they declared in .cpp, or not? In any case, the method does not see them and continues to swear. What can you think of?

Answer 1

What are the libraries? .lib, .dll or are you talking about a list of source files?